Planet-gearing.



r. H. PETERS. PLANET GEAR ING. APPLICATION F ILED FEB. 11, 1910.

Patented Jul 12,1910.

Tiaras PAUL HE IHEISH PETERS, OF -HAE1IBUEG, GEEMMY.

runes-enemies.

To all whom it may concem;

Be it known that I, PAUL HEINRICH PETERS, a subject of the German Emperor,

and resident of Hamburg, Germany, have invented certain new and useful Improvements in and Relating to Planet-Gearing, of which the following is a. specification.

This invention relates to improvements in planet gears which are used as countershafts and serve to transmit the work of an engine or shaft running -at a high speed very inuch geared down to a driven shaft in transmission gears of the kind used for electric motors, benzin motors, steam turbines, motor vehicles and the like. As compared with known gears of this kind the present invention presents the advantage that the power is transmitted only by means of gear wheels and that a very large numberof teeth are always in mutual engagement so that every silent and uniform running is obtained and the crank slots, cam grooves and the like means which would otherwise be i necessary and which occasion great friction, 25

are dispensed with.

In the accompanying drawing Figural is a longitudinal vertic'alseetion of a planet gearing embodying my invention, and Fig. 2 is a section on line 22 of Fig.

In the construction illustrated the shaft to be driven may be rotated in either direction.

The; wheel member 36 is. freely mounted on vthe middle, eccentric part 35 of the driving shaft 34 and comprises two internallytoothed wheel rims 37, 38 coaXialwith each other and of difierent sizes. A gear wheel 39 fixed to the shaft 40 meshes with the toothed ring 38, and by means of a bore the shaft l0 concentrically embraces thespindle of the shaft 34. A counter gear wheel 41 meshes in the other wheel rim 37 of the wheel member 36, the long hub of this wheel I 41 being loosely mounted on the driving shaft 3% and carrying a brake pulley 42.

l Specification of Letters intent. Patentgdl J 1351- i2, lgitfii, Application filed February 11, 1910; Serial l lo. 543,388.

its hub on the shaft 40. The hub of the casing member likewise carries a brake pulley 46 arranged beside the brake pulley 42.

New assuming that the brake pulley 42 is held. and the shaft 34 rotated in the direction indicated by the arrow. The ring of internal teeth 37 of the wheel member 36 freely mounted on the eccentric stud 35 then rolls upon the wheel 41 held by the braking and the movement of the wheel 36 which is thereby retarded is transmitted through its ring of teeth 38 on to the ring of teeth 31), the hub of which is keyed to the shaft to; the casing 45, 44; and the brake pulley 46 which are likewise fixed to this shaft, participate inthe rotation which is in the opposite direction to that of the driving shaft. lf, on the other hand, the pulley 46 is locked by braking the rotationof the shaft 3% in the direction indicated by the arrow causes the teeth 43 to roll upon the internal teeth of the casing member lei which is now held and themovement of the wheel member 36 is transmitted as before through the teeth 38 on to the teeth 39 and on to the shaft 41-0 but in the same direction of rotation as 34.

I claim:

1. A planet gearing comprising a driving shaft having an eccentric thereon, a main a braking means on the ,hub of the casing,

for the purpose specified.

2.- A planet gearing comprising a driven shaft having an eccentric thereon, a driven shaft having a bore which concentrically embraces the driying shaft, a main wheel rotatably mounted on said eccentric having two coaxial internally toothed rims of different size and an externally toothed rim, a counter wheel loose on the driving shaft having an externally toothed rim meshing with one of the internally toothed rims of the main wheel, a gear wheel fixed on the driven shaft having an externally toothed rim in mesh with the other internally toothed rim of the main Wheel, a casing rotntably mounted on the hub of the counter Wheel and on the driven shaft and having internal teeth meshing with the external teeth of the main wheel, a brake pulley fixed on the hub of the countet Wheel and a brake pulley fixed on the hub of the casing, for the 7 urpose specified.

PAUL HEINRICH PETERS.

Witnesses:

MAHMOUD LABEEB, MAURICE MILLS. 

